Database Develop

Galaxy S and USB Dac

Has anyone of you tried USB DACs with custom roms which support USB-OTG? If so, post brand of USB DAC, user experience and issues you may had.

why would i if the samsung galaxy S is an excellent DAC in itself..just have flash the voodoo kernel ( or a kernel with voodoo sound)..or get the voodoo app

An external DAC/AMP would be still a great option as an upgrade. Still there are better players out there. I'm also using a Sony Z walkman as portable player and its on a league of its own.

Possible that no one has used an external dac from the Galaxy S. I was thinking that all those custom roms listing this feature would have caught some interest.

USB DAC support
So, we have Jelly Bean ported for our devices. Any news about USB DAC support?
In CM10 usb dac can be detected in USB Host Controller app, but sound still plays through the rear speaker of the phone. At first I thought to change /etc/asound.conf to make sound go to the external usb dac, but it seems that this file is not used by the system at all - it can be deleted and everything works fine.

Cat In Boots said:
So, we have Jelly Bean ported for our devices. Any news about USB DAC support?
In CM10 usb dac can be detected in USB Host Controller app, but sound still plays through the rear speaker of the phone. At first I thought to change /etc/asound.conf to make sound go to the external usb dac, but it seems that this file is not used by the system at all - it can be deleted and everything works fine.
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Any developments on this? I'm wondering if I can hook my old i9000 to the phono input of my Hi-Fi and play music stream via DLNA. The built in DAC is very good apparently, but If i can attach an external one, even better.

[Q] HP Touchpad CM7/9 USB Audio Support

So I've been trying I find a solution for this, but it's been proving difficult. I have seen that on the nook forums, with a quick kernel mod and a tweak that allows USB audio control (i.e turn on switch for USB audio output), the guys over there have working digital USB audio output to an outboard DAC. Could anyone find out how to do this with cm7/cm9? Cm9 preferably. I assume we have basic USB host capability, since keyboards, etc. work, so its something specific to USB audio. This is definitely one of the only issues I need resolved on my TP.
Kojaku

ssabino said:
So I've been trying I find a solution for this, but it's been proving difficult. I have seen that on the nook forums, with a quick kernel mod and a tweak that allows USB audio control (i.e turn on switch for USB audio output), the guys over there have working digital USB audio output to an outboard DAC. Could anyone find out how to do this with cm7/cm9? Cm9 preferably. I assume we have basic USB host capability, since keyboards, etc. work, so its something specific to USB audio. This is definitely one of the only issues I need resolved on my TP.
Kojaku
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This is very possible with USB host and OTG Y-cable adapters. When my cables and my computer come in the mail I will try tinkering with it. It'd be nice to see Jack audio running on here. Once July rolls around and HP releases most of their driver and kernel sources, development in all areas will skyrocket for our Touchpads.
Sent from my Galaxy Nexus using Tapatalk 2

Does the upstream port require power even if the device I'm using has its own power? My E17 has its own battery, but for some reason it isn't even recognized through the USB OTG cable. I can't even get USB audio to work on the WebOS side, which supposedly has full USB audio support via pulse audio now...
Sean

ssabino said:
Does the upstream port require power even if the device I'm using has its own power? My E17 has its own battery, but for some reason it isn't even recognized through the USB OTG cable. I can't even get USB audio to work on the WebOS side, which supposedly has full USB audio support via pulse audio now...
Sean
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Hmm, I'm not sure. If it has it's own power supply, maybe you can try to mount it with a standard male microUSB to female USB. I'm about to see if I can get my external HDD with it's own power supply to mount to my phone and tablet. Will report back with results.
---------- Post added at 12:57 PM ---------- Previous post was at 12:46 PM ----------
Yeah, no go on mount :/

ssabino said:
So I've been trying I find a solution for this, but it's been proving difficult. I have seen that on the nook forums, with a quick kernel mod and a tweak that allows USB audio control (i.e turn on switch for USB audio output), the guys over there have working digital USB audio output to an outboard DAC. Could anyone find out how to do this with cm7/cm9? Cm9 preferably. I assume we have basic USB host capability, since keyboards, etc. work, so its something specific to USB audio. This is definitely one of the only issues I need resolved on my TP.
Kojaku
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Has there been anymore dev on this topic, including the current CM mods? This would make an interesting project for a carputer if the USB audio works.

USB Audio

I'm trying to make it working. I have Sound Blaster Surround 5.1 USB external sound card connected to RAZRi through OTG and powered USB Hub. Card is recognized properly but I can't make it play through it. I tried few apps to redirect sound to USB host but no luck.
Android 4.1.2 should have alsa driver and it should work without any kernel modifications.
Any suggestions??
Wysłane z Motorola RAZR i.

[Q] Micro usb stereo audio output?

Hey everyone,
Having a bad GPS -signal as soon as I plug in my headphones (which renders GPS tracking basically useless for me), I am looking for alternative ways of using my headphones while doing sports. Searching the Internet, I came across various microUSB to headphone adapters (e.g. serach on amazon for: "LinkS Micro USB to VGA MHL Adapter+Micro 5pin to 11pin adapter + Charging Cable in Black 3 Feet Kit" or "Universal Micro USB Interface to 3.5mm Plug Earphone Adapter (Black)", I have not enough posts to post links/images, yet). Now I am wondering if our phone will support these adapters and if yes, can I control the volume of the output?
Many thanks in advance!

Using an USB audio device requires USB OTG which our device doesn't support.

Hey @Adam77Root but we have working mhl which anyway is using microusb port. And iodaks kernel have working otg too.
Edit: android L seems will have support for USB audio devices IF they have working otg

gerciolisz said:
Hey @Adam77Root but we have working mhl which anyway is using microusb port. And iodaks kernel have working otg too.
Edit: android L seems will have support for USB audio devices IF they have working otg
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MHL uses a different method.
If there is working OTG, USB audio support is enabled in the kernel and USB audio HAL is included in the rom, it can work. Older versions too support it.

USB Camera

I've bought an usb endoscope type of camera that I connect to both my laptop and to my samsung galaxy s5 via a usb otg cable. The app I use for the camera is the camerfi from google play and it works great. I tried to connect it to the nook hd+ via a female usb coupler but it won't work. Any ideas how to get this working?

I believe the USB Host feature is available only on CM10 and CM11 ROMs (and only for certain USB device types).
What ROM are you using?

I got 2 nooks, one on the latest lollipop cm12.1 and the other on cm11 M12.

CM12.1 current builds do not support USB Host.
On CM11 you need to use verygreen's UsbHostSwitcher app to enable it, although it does not look like USB camera is supported -- see http://forum.xda-developers.com/showpost.php?p=43053751&postcount=29.

Thanks for the info digimax. The usbhostswitcher app doesn't install on the cm12.1 but does on cm11. When I switched it on, while the camera wasn't working as you've predicted, the led light of the endoscope camera did turn on. Maybe someday there will be a fix to this, one can only hope.